noun
team competition; team match
Refers to a contest or game where groups compete as teams, as opposed to individual events. Common in sports, board games, and academic competitions.
次の試合は団体戦です。
The next match is a team competition.
団体戦ではチームワークが重要だ。
Teamwork is important in team competitions.
チーム戦 is a more casual, loanword-based synonym for team competition, while 団体戦 is the standard Sino-Japanese term.
Compound of 団体 (group, team) and 戦 (war, battle, match). The exact historical derivation is uncertain, but the word follows a common Sino-Japanese pattern for naming types of competitions.